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Finding the Fourth Proportional to 355,499.96, 490,589.91 and 194,354.97

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Solution

The fourth proportional to 355,499.96, 490,589.91 and 194,354.97 is: 268,209.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,499.96 : 490,589.91 = 194,354.97 : x
  2. Step 2: Convert to fraction form
    355,499.96/490,589.91 = 194,354.97/x
  3. Step 3: Cross multiply
    355,499.96x = 490,589.91 × 194,354.97
  4. Step 4: Simplify right side
    355,499.96x = 95,348,583,815.63
  5. Step 5: Solve for x
    x = 95,348,583,815.63/355,499.96
  6. Step 6: Final answer
    x = 268,209.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.